John a



J. A. GANO.

:Umlage PoRLQooMoTIVE AND OTHER BOILERS. No. 274,432;

- Patented Mar.27,188.3.

l n. PETERS, mummy-mw. wammmn. D. C.

UNITED STATES JOHN A. GANO, Or circ-innert Onto.

lFURNACE FOR LOCOMOTIVE AND OTHER BOILERS.

SPECIFICATION forming part of Letters Patent No. 274,482, dated March 27, 1883.

Application tiled August 11, 1882. (No model.)

To all whom it may concern Be it known that I, J OnN A. GANO, a citizen ofthe United States, residing atGincinnati, in the count-y of Hamilton and State of'Ohio, have invented certain new and useful Improvements in Furnaces for Locomotive and other Boilers; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertaius to make and use the same'.

This device is so simple that it is thought to be sulicient for its comprehension to present a view of its form and manner of application in a single drawing, which shows a side View of the interior of a tire-box or furnace with the improvement inplace. The drawing is explained by the use of letters referring to its several parts and to its essential peculiarities.

The improvement referred to in this application is especially adapted for use in locomotive and portable boilers; but it can be advantageously applied in combination with other forms ot boilers, particularlysuch' as have Water-walls about their furnaces or water-walls depending from the boilers for backs of their furnaces, and ns permit, at the same time, the passage 'of the gases of combustion directly through their fines. lt is also applicable for use in the vaporizntion oflluids in forms of boilers constructed for such purposes.

Its objects are to stimulate active circulation of the Huid contents ot' boilers, and to promote the combustion of gases proceeding from the burning tluid, thereby generating steamrapidly and economizing fuel largely.

This invention consists of a water-partition of peculiar form, terminating at its upper end in two legs, and so placed in a tire-box or furnace as to divide the sameinto two parts, and to secure thereby the application ot' the heat of the furnace to the best possible advantage.

This water partition or diaphragm is placed in the fire-box or furnace diagonally, reaching from' the water-wall at the rear end of the tiredesigned that the hollow space in this partition shall usually be of the same thickness as the water-jacket or water-walls of the tire-box or furnace, though it may be thicker or thinner throughout or in parts, as shall best adapt it for the work to be performed by it. lts width is to conform to theinterior width of the tire-box orfurnace, as near as may be, though it is not to be attached to or made a part of its side walls unless it be braced to them by hollow stay-bolts for the purpose of holdingit in position. it is to be firmly attached to the rear water-wall depending fronf the boiler, at the point or line referred to or indicated above, as though it were apart of it, with an opening its full width and thickness communicating with the said rear water-wall in such a manner as to permit of a free iiow of the contents of the boiler from its bottom, or from the water-wall, where it is connected, up through it i when exposed to heat toward the front openings at the top, and through them into the upper part of the boiler over the crown-sheet. The upper openings ofthe partition, or, rather, its legs, areto pass either through the crownsheet of the boiler or through the upper edge of the front waterwall, if there be one, and are to terminate in the water-space over the crown-sheet in legs having curved extremities,

which shall at the discharge-points be on or near the upper water-line of the boiler. Between these legs, `which begin to divide or bifurcate at a. point a little below the level of the upper edge of the furnace-door, is the space for the passage of the gases produced by the burning fuel into the space between the partition and the crownshcet, which becomes a combustion-chamber, whence the unconsumed portions of them, pass through the lines into the stack. The partition may curve from the line at which it leaves the water-wall and ascend to the crown-sheet at an obtuse angle to thatline,if` found desirable. This partition is to be ofthe same metal as the boiler, though it may be of other metal, as of steel, or copper, or iron, as is preferred. Itis to be stayed, as are the water-walls of tire-boxes, with staybolt-s to give it resistance to pressure. Near its upper ends hollow stay-bolts may be passed from the outer part of the front of the Wall of the furnace or flrelbox, through it into the furnace, or into the combustion-chamber, for

the purpose ot' supplying air to mingle with -the gases generated in the furnace. Hollow stay-bolts may also be placed in the sides of the combustion-chamber to provide air to the chamber, all to be provided with sliding dampers, if found desirable, or to be conducted through the water walls from the front, and turned with an angle through the inner shell into the combustion-chamber. The practical results of the use of this partition are, that the fluid in it, being subjected to the direct heat of the furnace, is rapidly heated and putin motion. rlhis action ot' the heat provokes an active passage of the vcontents of the boiler through the partition'froin its opening at its foot to its outlets at the top, causing thorough circulation of them and acorrespondingly rapid vaporization ot' rhein. These results are necessarily accompanied by great economyl in fuel.

In order that this invention may be easily understood, a drawing of it is appended to this, and the parts of it described by reference-letters, as follows:

F represents the ordinary locomotive tirebox or furnace, open on its right side, which lpresents a showing of the partition bit'urcated at about one-halfits height, (it may be less or more, as found best,) in place reaching from the rear water-wall otl the furnace, near its bottoni, diagonally to the upper front angle of the tire-box or furnace, terminating in two legs which are extended into the interior of the boiler near the front end of the crownsheet and curving downward into or near the ter-jackets, water-walls having openings into the boilers at or near their furnace ends for the passage of the contents of the boilerspinto the water-backs, and thence into the partitions, may be depended from the boilers to a 'sufficient depth, and, being connected, as

shown rin the drawing, with the partition, will have each a circulation of its contents, which will insure its durability. The upper ends or legs ofthe partition can be made to enter the crown-sheet at any line that may be desirable in view of the object to be attained.

P represents the partition, having a space between its two legs for the passage ofthe gaseous products of combustion.

O is the opening in the partition where the legs separate to permit the passage ofthe smoke in to O-the combustion-chamber-between the partition and the crown-sheet.

L L are the legs of the partition,passing into the crown-sheet of the boiler.

S S are hollow stay-bolts placed at convenience; for the admission of air, and supplied with sliding valves to regulate the amount of air that may be admitted.

B is the furnace end of the boiler proper.

D is the door ot' the fire-box or furnace. y

The practical working of this invention is, that the contents ot' the boiler are b v it kept in active circulation through the partition according to vthe well-known'principle governing` the action of heat applied to a water-partition of such a form and location. This man ner ot applying heat to the contents ofa boiler causes a rapid passage ot' these contents through the partition from its lower part .to its outlets. This forced circulation is of course stimulated by the inflaming in the combustion-chamber, where they receive admixtures ot' air, of the unconsumed gases generated in the fire-box or furnace. The circulation ot' the contents ofthe boiler thus secured prevents the destruction of the partition by heat, and tends to the prevention of scale and sediment in boilers ot' which it maybe a part.

I claim therefore as my invention and desire to secure by Letters Patentvl. The combination, in a boiler -furnace or Irebox,'of a water-partition, P, having legs L L, that pass through the crown-sheet and terminate in curved extremities in the waterspace over or above said crown-sheet, with a rear water-wall, and with a combustion-chain berv U for use in connection with and as a 7 7 part o f a boiler, either for evaporation or vaporization, to whichitis attached in the form.

as hereinbefore described, and placed in fur- .nace or lirebox at such an angle to the hre as shall produce the results'aimed at--namely, circulation through the partitionot' the contents ofthe boiler from its bottom or lower level into or near its upper water-level at convenient points in the space above the tire-box orY furnace, and thus causing` continuous, complete agitation of the contents ot' the boiler, whether the boiler be for use as steam-generator or as evaporator.

2. In a boilerfurnace or fire-box, the combination of a rear 'water-wall depending from and having interior connection with the boiler, with a water-partition, P, having legs L L, tbatpass'through the `crown-sheet and terminate in curved extremities' in the water-space over or above the crown-sheet ofthe boiler, so

as to permitthe free now and current ofthe con- JOHN ARMSTRONG GANO.

Witnesses:

CLEMENT BATEs, GRAS. LAWRENCE.

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